Noun

S: (n) train, railroad train (public transport provided by a line of railway cars coupled together and drawn by a locomotive) "express trains don't stop at Princeton Junction"

S: (n) string, train (a sequentially ordered set of things or events or ideas in which each successive member is related to the preceding) "a string of islands"; "train of mourners"; "a train of thought"

S: (n) caravan, train, wagon train (a procession (of wagons or mules or camels) traveling together in single file) "we were part of a caravan of almost a thousand camels"; "they joined the wagon train for safety"

S: (n) train (a series of consequences wrought by an event) "it led to a train of disasters"

S: (n) train (piece of cloth forming the long back section of a gown that is drawn along the floor) "the bride's train was carried by her two young nephews"

S: (n) gearing, gear, geartrain, power train, train (wheelwork consisting of a connected set of rotating gears by which force is transmitted or motion or torque is changed) "the fool got his tie caught in the geartrain"

Verb

S: (v) train, develop, prepare, educate (create by training and teaching) "The old master is training world-class violinists"; "we develop the leaders for the future"

S: (v) prepare, groom, train (educate for a future role or function) "He is grooming his son to become his successor"; "The prince was prepared to become King one day"; "They trained him to be a warrior"